Adjustable Dumbbell

ABSTRACT

Improvements in an adjustable dumbbell to adjust the weight by insertion and removal of weights to one or both sides of the dumbbell. The weights are loaded into a carousel around the outside of the dumbbell handgrip. The weights can be place in opposing axial arrangement or can be placed in an uneven loading. A locking mechanism allows for a single rotation of the locking mechanism to secure and unlock all weights with a single rotation. The locking mechanism prevents the weights from falling or dislodging from the dumbbell axle when the dumbbell is being used. A rotating central axil allows for the heavy side of the dumbbell to rotate to a lower position. The rotating axil creates an eccentric weight placement for dynamic inertia exercises where a user can rotate or spin the eccentric weight around the handle of the dumbbell.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the benefit of Provisional Application Ser. No.63/344,577 filed May 21, 2022, the entire contents of which is herebyexpressly incorporated by reference herein.

PRIOR ART

U.S. patent Ser. No. 11/065,499 issued on Jul. 20, 2021, to Paul Chenand is titled Adjustable Dumbbell. This patent discloses an adjustabledumbbell assembly includes a dumbbell mechanism having two or moreweight members engaged in a receptacle, and a handle bar engaged betweenthe weight members, two catches slidably engaged in the handle bar andextendible out and engageable with the weight members for detachablyattaching the weight members to the handle bar, two followers slidablyengaged in the receptacle and each having a protrusion for engaging withthe catches and for moving the catches to engage with the weightmembers. The weights in the patent stack on the outside of the dumbbellas opposed to around each side of the dumbbell.

U.S. Published application number 20170274240 was published on Sep. 28,2017, to Alex Pong and is titled Easy to assemble/disassemble adjustablemonetary coin-weighted dumbbell. This publication discloses an easilyassembled and disassembled exercise dumbbell that derives the majorityof its adjustable weight from the addition of monetary coins. The numberof coins used determines the weight of the dumbbell, thereby makingpossible very small incremental increases in the dumbbell's effectivetotal weight. The weight of the dumbbell's handle assembly can bemultiplied up to nine times in its heaviest dumbbell configuration.While this publication is for an adjustable dumbbell it requires a userto insert coins of unknown weight.

U.S. Pat. No. 6,837,833 issued on Jan. 4, 2005, to Miles Elledge and istitled Specialty Weight Training Apparatus and Method. This patentdiscloses a dumbbell type apparatus comprises a hand gripping surfacemounted on an axle and engaging a pair of spaced apart circularwheel-weights rotationally engaged with the axle. The weights provideperipheral outfacing surfaces for rolling the apparatus on a floorsurface. Each of the weights has a non-concentrically placed center ofmass, whereby with the hand gripping surface held in one hand, theapparatus may be rotated causing the wheel-weights to spin and tothereby exercise the arm holding the apparatus. This patent requiresthreading the weights into the end of the axle.

U.S. Pat. No. 8,900,104 issued on Dec. 2, 2014, to Andy Shozda and istitled Bullet-pocket Dumbbell Exercise Apparatus. This patent disclosesan improved dumbbell exercise apparatus includes at least a pair ofnovel bullet-pocket configured weight plate members to be mounted inspaced end-wise relationship on a dumbbell bar, wherein each weightplate member is configured to include at least a pair of cylindricalpocket-like openings extending axially through the thickness dimensionof the weight plates, respectively, in parallel and axially offsetextension to each other is selectively axially inserted into an alignedcylindrical pocket opening, in order to add or adjust weight to theweight plate. While this patent discloses a dumbbell with bulletweights, the retention mechanism requires rotating the weight within thecylindrical opening.

What is needed is an adjustable dumbbell where weights are loaded aroundthe sides of the dumbbell and retained with a single retentionmechanism. The adjustable dumbbell in this document provides thesolution.

BACKGROUND OF THE INVENTION

Adjustable dumbbells allow a user to quickly change the weight on adumbbell without requiring the user to own a large number of dumbbells.Most adjustable dumbbells use a stack of weights that extend out thesides of the dumbbell. The weights are sequentially stacked on the sidesuntil a desired amount of weight has been added. Some more modernadjustable dumbbells use a quick engaging and locking system that allowsfor a quick change of the weight.

SUMMARY OF THE INVENTION

It is an object of the adjustable dumbbell to allow for the weight ofthe dumbbell to be adjusted by insertion and removal of weights to oneor both sides of the dumbbell. The weights are loaded into a carouselaround the outside of the dumbbell handgrip. The weights can be place inopposing axial arrangement or can be placed in an uneven loading. Theindividual weights can range from ½ pound to 2 or more pounds. While aminimum of one opening in the carousel can be used in a preferredembodiment would be 6, 8, or more openings to accept weight.

It is an object of the adjustable dumbbell to have a locking mechanismon the outside ends of the dumbbell. The locking mechanism allows for asingle rotation of the locking mechanism to secure and unlock allweights with a single rotation. The locking mechanism prevents theweights from falling or dislodging from the dumbbell axle when thedumbbell is being used. The maximum total wight is based upon the numberof cavities on the outside of the dumbbell.

It is another object of the adjustable dumbbell to use a central axialbearing on the handle. The rotating central axil allows for the heavyside of the dumbbell to rotate to a lower position. This ensures thatthe handle only exerts normal load from the weights. If the weight doesnot rotate the rotational axis of the load can change as the dumbbell islifted in an arm curl exercise.

It is another object of the adjustable dumbbell to have a form factorthat is smaller on overall length that adjustable dumbbells that stackweights of the sides of the dumbbell. Because the weights are placed ina radial relationship around the carousal the length of the adjustabledumbbell is nor changed by the addition or removal of weights. Theweights are further nested into the carousal so the outside diameter ofthe dumbbell may also be minimally or not affected by addition orremoval of weights.

It is still another object of the adjustable dumbbell to create aneccentric weight placement for dynamic inertia exercises where a usercan rotate or spin the eccentric weight around the handle of thedumbbell. The imbalanced weight can be easily increased and decreased tochange the intensity of the exercise.

Various objects, features, aspects, and advantages of the presentinvention will become more apparent from the following detaileddescription of preferred embodiments of the invention, along with theaccompanying drawings in which like numerals represent like components.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 shows a perspective view of an adjustable dumbbell.

FIG. 2 shows an end view of the adjustable dumbbell, the opposing endview being essentially a mirror image.

FIG. 3 is a cross-sectional view taken from 3-3 in FIG. 2 .

FIG. 4 is an inside perspective view of one side of the adjustabledumbbell.

FIG. 5 shows a perspective view of the outside of one side of theadjustable dumbbell.

FIG. 6 is a perspective view of a slug weight, the locking plunger cogand the locking knob.

FIG. 7 is the adjustable dumbbell in use with some slug weightsinstalled to create an eccentric or imbalance.

FIG. 8 shows a perspective view of another embodiment of the adjustabledumbbell.

FIG. 9 shows an end view of the adjustable dumbbell from FIG. 8 , theopposing end view being essentially a mirror image.

FIG. 10 is a cross-sectional view taken from 10-10 in FIG. 9 .

FIG. 11 is an inside perspective view of one side of the upper carousel.

FIG. 12 shows a perspective view of the cog locking mechanism.

FIG. 13 is a perspective view of a slug weight holder.

FIG. 14 is an underside perspective view of a slug weight holder fromFIG. 13 .

FIG. 15 is a perspective view of a kettle bag using the weights.

FIG. 16 is a view inside the kettle bag.

FIG. 17 is an exploded view of the kettle bag and weights.

FIG. 18 is a perspective view of weighted hose.

FIG. 19 is a perspective view of the weighted hose showing internalconstruction.

DETAILED DESCRIPTION OF THE INVENTION

It will be readily understood that the components of the presentinvention, as generally described and illustrated in the drawingsherein, could be arranged and designed in a wide variety of differentconfigurations. Thus, the following more detailed description of theembodiments of the system and method of the present invention, asrepresented in the drawings, is not intended to limit the scope of theinvention but is merely representative of various embodiments of theinvention. The illustrated embodiments of the invention will be bestunderstood by reference to the drawings, wherein like parts aredesignated by like numerals throughout.

While this technology is susceptible of embodiment in many differentforms, there is shown in the drawings and will herein be described indetail several specific embodiments with the understanding that thepresent disclosure is to be considered as an exemplification of theprinciples of the technology and is not intended to limit the technologyto the embodiments illustrated. The terminology used herein is for thepurpose of describing particular embodiments only and is not intended tobe limiting of the technology. As used herein, the singular forms “a,”“an,” and “the” are intended to include the plural forms as well, unlessthe context clearly indicates otherwise.

It will be further understood that the terms “comprises,” “comprising,”“includes,” and/or “including,” when used in this specification, specifythe presence of stated features, integers, steps, operations, elements,and/or components, but do not preclude the presence or addition of oneor more other features, integers, steps, operations, elements,components, and/or groups thereof. It will be understood that like oranalogous elements and/or components, referred to herein, may beidentified throughout the drawings with like reference characters.

Item Numbers and Description 20 adjustable dumbbell 21 slug weight(s) 22upper slug 23 lower slug 24 recess 25 bullet weight 40 handle 41 bearing42 handle shaft 43 lock 44 lock recess 60 carousal 61 pockets 62 cushion63 recess 64 boss 65 lower carousal 66 upper carousel 67 upper carouselstop 68 spring extension 69 slot 70 button 71 movement 72 translationcog 73 ball 74 spring 75 outer diameter 76 reduced diameter 77 bolt 78cylindrical boss 79 rotation limiter 80 locking knob 81 knob bolt 82bearing plug 83 spring 84 nut 85 bearing 86 plunger cog 87 plunger arm88 follower 89 curved slot 90 insert 91 grip recess 92 insert 93 spread94 push 95 rotate 96 out 96 move 97 eccentric motion 98 rotation 99slide 100 holder 101 inner wall 102 outer finger 103 radius 104 flex 105gap 108 ribs 109 holes 200 kettle bag 201 cylindrical bucket 202 handle203 top cover 204 zipper 205 flexible bands 206 horizontal cushion(s)207 elastomeric frame 208 pocket(s) 300 weighted hose 301 tube bag 302zipper 303 slider 304 flexible band(s) 305 flexible band(s)

FIG. 1 shows a perspective view of an adjustable dumbbell 20. Thisfigure shows a preferred embodiment with identically sized cylindricalslug weights 21 inserted into multiple pockets 61 in each side of thecarousal 60. A rotatable handle 40 connects carousals 60 on oppositesides of the handle 40. The weight (or resistance) is adjusted byvarying the number of slug weights 21 used. The slug weights 21 areprevented from sliding out of the pockets 61 in the carousal 60 by alocking knob 80 that is turned to lock the slug weight(s) 21 in thecarousel 60 or opened to allow for removal of one or more of the slugweights 21. Turning the locking knob 80 aligns cutouts with one or moreslug weights 21 for removal. The locking mechanism is shown anddescribed in other figures herein.

FIG. 2 shows an end view of the adjustable weight 20, the opposing endview being essentially a mirror image and FIG. 3 is a cross-sectionalview taken from 3-3 in FIG. 2 . The dumbbell 20 is essentially constructfrom two identical halves joined by a handle 40. In the preferredembodiment the handle 40 has a curved radius that is narrower on themiddle portion of the handle 40. Each end of the handle 40 has a bearing41 that allows the end carousel(s) 60 to spin or turn independently ofthe handle 40. In the lower end of FIG. 3 the lower portion of thehandle 40 shows a lock 43 or crown shaped ring that is slid 99 into alock recess to stop rotation or spinning of a carousel 60 ends relativeto the handle 40.

The carousal 60 connects to the handle shaft 42 and the handle 40through the bearing 41. None or a plurality of slug weights 21 can beplaced in the pocket(s) 61 of the carousel 60. In the embodiment shownthere are six weights 21 in the carousel 60. While this embodiment showsthat the carousel 60 can retain up to six weights, the carousel 60 canbe designed to hold as few as two weights 21 to more than six weights21. In the preferred embodiment, the weights 21 are about 2 pounds or 1Kg each, but the weights 21 can be greater or lesser than 2 pounds or 1Kg depending upon the design requirements or the needs of the consumer.The weights can range from 0.5 Kg to 2 Kg each. It is also contemplatedthat the weights 21 can be different weights but have essentially thesame geometry with a lower slug 23 and upper slug 22 connected through arecess 24. The recess 24 is engaged with a plunger cog 86 that iscontrolled by the locking knob 80 to retain and release one or aplurality of weights 21.

The locking knob 80 is held by a knob bolt 81 that passes through thelocking knob 80, a bearing 85, a spring 83 and is threaded into a nut84. The spring 83 provides tension to the weight retention mechanism. Abearing plug 82 has pins that fit within followers that move individualplunger cog(s) 86 into an out of the recess 24 in each weight 21.Another figure in this document provides greater clarity for theoperation and rotation of the locking knob 80 to extend and retract theplunger cog(s) 86 in unison.

FIG. 4 is an inside perspective view of one side of the adjustabledumbbell 20 and FIG. 5 shows a perspective view of the outside of oneside of the adjustable dumbbell 20. The weights 21 have been placed indifferent positions to show features with the carousel 60. With theouter handle removed, in FIG. 4 , a portion of the handle shaft 42 andthe bearing 41. The outer race of the bearing is fixed to the outerhandle (not shown in this figure), and the inner race of the bearing issecured to the handle shaft 42 and carousel 60.

In these figures the weights are shown with the upper slug 22, lowerslug 23 and the recess 24. While a particular shape of the weight isshown with a flat end on the upper slug 22 portion and a rounded nose onthe lower slug 23 portion, as long as the weight has a cylindricalrecess 24 the weight can take nearly any shape. The weight can befabricated from a solid weighted metal a homogeneous weightedelastomeric or with a weight molder or encapsulated in within a shell.In this embodiment the rounded lower slug 23 portion nests in acomplementary shaped rounded pocket 61 in the carousel 60.

The locking knob 80 is shown recessed within the weights. A portion ofthe plunger cog 86 is shown extending from under the knob 80 and alignedto enter the recess 24 of the weight. As the locking knob 80 is turned,each plunger cog 86 is moved from under the locking knob 80 and into (orout of) the recess 24 in their respective weight. In the preferredembodiment the locking knob 80 controls only its associated carousel 60.

FIG. 6 is a perspective view of a slug weight 21, the locking plungercog 86 and the locking knob 80 with the carousal removed. The slugweight 21 is shown with the upper slug 22 and lower slug 23 separated byrecess 24. Some of the plunger cogs 86 have been removed to show thecurved slot 89 where a follower 88 on the bottom of the plunger arm 87.The locking knob 80 has a plurality of curved slots 89 that correspondto the number of cavities in the carousal for the weights 21.

The locking knob 80 has a number of grip recesses 91 that provideseasier grip and rotation of the locking knob 80. A central cylindricalboss 78 extends from the underside of the locking knob 80 and has acentral hole for the knob bolt (not shown in this figure) to passtherethrough. On one side of the central cylindrical boss 78 is arotation limiter 79 post that limits rotation of the locking knob.

To operate the locking mechanism for the weights 21 the locking knob 80is rotated 95. The rotation moves the follower 88 on the plunger cog 86to move in the curved slot 89 in the knob 80. This will then move 96 theplunger cog 86 into or out of the recess, depending upon the directionof rotation 95 of the locking knob 80. Rotation of the locking knob 80moves each of the plurality of plunger cogs 86 radially outward orradially inward. The amount of rotation 95 is limited by the arc lengthof the curved slot 89 as well as by travel of the cylindrical boss 79 ina travel limiter (not shown).

FIG. 7 is the adjustable dumbbell 20 in use with some slug weights 21installed to create an eccentric or imbalance. In this figure four slugweights 21 are shown installed with two weights in each carousal 60side. As the adjustable dumbbell 20 is lifted in an exercise such as acurl, the bearings in the handle 40 allow the carousals 60 to rotate 98as gravity forces the weights 21 to remain at the lowest side of theadjustable dumbbell 20. This also allows a user to exercise with aneccentric motion 97 where the user can grip the handle 40 and exertrotational 98 motion to the eccentric imbalance of the carousals 60. Therotational 98 motion to a carousal with a radially imbalanced eccentricnumber of weights enables eccentric motion 97 or dynamic inertiaexercise by imparting centripetal motion or forces to the handle 40.

FIG. 8 shows a perspective view of another embodiment of the adjustabledumbbell 20. This figure shows another preferred embodiment withidentically sized cylindrical slug weights 25 inserted into multiplepockets 61 in each side of the lower carousal 65. A rotatable handle 40connects the carousals on opposite sides of the handle 40. A cushion 62extends around each carousal. The weight (or resistance) is adjusted byvarying the number of slug or bullet weights 25. The weights 25 areprevented from dislodging out of the pockets 61 in the upper carousal 66and lower carousal 65 by a button 70 that is depressed to unlock theweight(s) 25 from the pockets 61 and a tab that in the lower carousal 65that extending into a recess 63 in each weight 25. The locking mechanismis shown and described in other figures herein.

FIG. 9 shows an end view of the adjustable dumbbell from FIG. 8 , theopposing end view being essentially a mirror image, FIG. 10 is across-sectional view taken from 10-10 in FIG. 9 .

The dumbbell is essentially construct from two identical halves joinedby a handle 40. In this preferred embodiment the handle 40 has iscylindrical. Each end of the handle 40 has a bearing 41 that allows theend carousel(s) to spin or turn separately and independently of thehandle 40. In the lower end of FIG. 10 the lower portion of the handle40 shows a lock 43 or that is slid 99 into a lock recess 44 to stoprotation or spinning of each carousel end relative to the handle 40. Anelastomeric bumper 62 extends around each of the lower carousel(s) 65.Each weight 25 has a rounded end of the lower slug 23 and a flat end atthe upper slug 22 end that are separated by a recess 24. The carouselsare secured to the handle shaft 42 with a fastener or bolt 77 through abearing plug 82.

The carousal 60 connects to the handle shaft 42 and the handle 40through the bearing 41. None or a plurality of weights 25 can be placedin the pocket(s) 61 of the lower carousel 65. In the cross section thereare weights 25 in the lower side of the figure and the pockets 61 in theupper portion of the cross-section are empty. While this embodimentshows that the carousel can retain up to six weights, the carousel canbe designed to hold as few as two weights 25 to more than six weights25. In the preferred embodiment, the weights 25 are about 2 pounds or 1Kg each, but the weights 25 can be greater or lesser than 2 pounds or 1Kg depending upon the design requirements or the needs of the consumer.The weights can range from 0.5 Kg to 2 Kg each. It is also contemplatedthat the weights 25 can be different weights but have essentially thesame geometry with a recess 63 that is configured to engage in the boss64 and the weights 24 have a recess 24 that extends at least partiallyaround the weight 25. The recess 24 is engaged with a plunger cog 86that is controlled by the button 70 to retain and release one or aplurality of weights 25.

The upper carousal 66 retains the button 70 and cog extending mechanism.The button 70 is held in an extended position with a spring 83. As thebutton 94 is pushed 94 a ball 73 is guided into a smaller diameter ofthe button 70 and a spring 74 retracts the plunger cog 86 into the lowercarousel 65 to release the weight(s) 25 on one side of the adjustabledumbbell 20. Other figure in this document provides greater clarity forthe operation of the button to release the weights 25.

FIG. 11 is an inside perspective view of one side of the upper carousel66 and FIG. 12 shows a perspective view of the plunge cog 86 lockingmechanism. In these figures, only one side of the dumbbell is shown, anda large number of components have been removed to provide a clearerimage of the operation of the button 70 to secure and release theweight(s) 25 in the upper carousel 66. A spring 74 is fitted in a slot68 between a translation cog 72 and an upper carousel stop 67 in a slot69 to bias, track and guide the spring extension 68 of the translationcog 72 in a retracted position. The sides of the translation cog 72 arefurther guided by the slot created in the openings in upper carousel 66as the translation cog 72 moves 96.

A spring 83 biases the button 70 in an extended position where the balls73 press against the larger outer diameter 75 of the button 70. Thelarge outer diameter 75 of the button 70 overcomes the spring 74 forcesto hold the translation cog(s) 72 in an extended position where theplunger cog 86 extends into the recess 24 of each weight 25 to preventthe weigh 25 from dislodging when using the dumbbell.

When the button 70 is pushed 94 in, the spring 74 pushes each ball 73 tofollow into the reduced diameter 76 of the button for movement 71 of theplunger cog 86 to move 96. This releases the plunger cog 86 from therecess 24 of the weight 25 thereby allowing the weight 25 to be removed,or alternatively allows for a weight 25 to be inserted into the carouselof the dumbbell.

FIG. 13 is a perspective view of a slug weight 25 holder 100 and FIG. 14is an underside perspective view of a slug weight 25 holder 100 fromFIG. 13 . The holder 100 allows for storage or transportation of one tosix weights 25. While the holder 100 is shown and described for holdingsix weights 25, it could be designed to hold as few as two weights 25 tomore than 6 weights 25. The holder 100 is essentially a formed or moldedshape with outer fingers 102 having an inner wall 101 at a radius 103that corresponds to the inside diameter of the recess 24 of the weight25. When a weight 25 is inserted between the fingers 102 the fingers 102will flex 104 to allow the weight 25 to be inserted into the holder 100.The gap 105 is sized to allow the fingers to spread 93 withoutcontacting an adjacent finger. While the weight 25 is shown with therecess 63 on one particular side of the holder 100, the weight 25 can beinserted in either orientation. One side of the holder 100 is shown withribs 108. Finger holes 109 allow the holder 100 to be held fortransportation.

FIG. 15 is a perspective view of a kettle bag 200 using the weights 25,FIG. 16 is a view inside the kettle bag 200 and FIG. 17 is an explodedview of the kettle bag 200 and weight(s) 25. The kettle bag 200 allows auser to install as many weights 25 as desired to perform exercises thatcan be accomplished with a kettle bag having a fixed weight. Theseexercises can include, but not be limited to, deadlift, swing, clean &press, squats, row, lunge, walk and snatch.

The weights 25 are shown retained in two levels with horizontal cushion206 spacers that prevent impact between weights and from surfacesoutside of the kettle bag 200. The kettle bag 200 has an outer shellwith a handle 202. The outer cylindrical bucket 201 shell has a zipper204 top where weights 25 can be inserted and removed. While a zipper isshown other forms of closing the lid 203 are contemplated including, butnot limited to, snaps, buckle and hook-and-loop fasteners.

In FIG. 16 the weights 25 are retained in position with flexible bands205. Up to 5 weights 25 are retained in the flexible bands 205 and asixth weight 25 is retained within the center of the 5 encircled andretained weight 25. In FIG. 17 the weights 25 are secured in anelastomeric frame 207 where the weights 25 are surrounded inserted 92and secured in pockets 208. The two layers of elastomeric frames 207 andhorizontal cushions 206 are inserted 90 into the cylindrical bucker 201.

FIG. 18 is a perspective view of weighted hose 300 and FIG. 19 is aperspective view of the weighted hose 300 showing internal construction.The weighted hose uses none, one or more of the weights 25 that aresecured within the hose body or tube bag 301. A zipper 302 extends alongthe length of the tube bag 301. A slider 303 allows the zipper 302 to beopened or closed. While a zipper 302 is shown other forms of closing theelongated bag 301 are contemplated including, but not limited to, snaps,buckle and hook-and-loop fasteners. Because the bag is flexible, (some)weights 25 can be placed at one or both ends and the user can “crush”the tube for gripping or wrapping the center of the tube over a portionof the user's body or neck.

The opened weighted hose 300 in FIG. 19 shows weights 25 secured withflexible bands 304 and some empty flexible bands 305. The bands engageinto some, or all, of the recess 24 of each weight to reduce shifting ofthe weights and contact between adjacent weights 25. A user can installor remove weights 25 depending upon the exercise or the exerciseintensity. Exercised can include, but not be limited to lift, swing,drag, toss, drop, heave and squats.

Thus, specific embodiments of an adjustable dumbbell and use of theweights have been disclosed. It should be apparent, however, to thoseskilled in the art that many more modifications besides those describedare possible without departing from the inventive concepts herein. Theinventive subject matter, therefore, is not to be restricted except inthe spirit of the appended claims.

1. An adjustable dumbbell comprising: a handle with carousals on eachside of said handle; each carousal having a plurality of recesses fortemporally retaining a removable weight in each of said plurality ofrecesses, and wherein said carousal retains said removable weights in aradial arrangement with a locking mechanism, and said locking mechanismcontrols a plurality of plunger cogs that are configured to engage anddisengage into at least a portion of each of said removable weights. 2.The adjustable dumbbell according to claim 1, wherein said lockingmechanism includes separate slots for each of said plurality ofrecesses.
 3. The adjustable dumbbell according to claim 2, wherein saidlocking mechanism is a button having at least a major outside diameterand a minor outside diameter.
 4. The adjustable dumbbell according toclaim 3, wherein each said plunger cog has a tracking feature thatfollows said major outside diameter and said minor outside diameter toextend and retrack each said plunger cog.
 5. The adjustable dumbbellaccording to claim 4, wherein each said plunger cog includes a springthat biases each said plunger cog.
 6. The adjustable dumbbell accordingto claim 3, wherein said button is biases in an extended positionwhereby said plurality of plunger cogs are biased to be engaged intosaid at least a portion of each of said removable weights.
 7. Theadjustable dumbbell according to claim 2, wherein each of said pluralityof plunger cogs is controlled by a knob that moves each of saidplurality of plunger cogs within a curved slot.
 8. The adjustabledumbbell according to claim 7, wherein said rotation of said lockingknob moves each of said plurality of plunger cogs radially outward orradially inward.
 9. The adjustable dumbbell according to claim 8,further includes a spring that is configured to provides tension to saidlocking knob to retain said weights.
 10. The adjustable dumbbellaccording to claim 1, wherein said removable weights have a firstrounded end and a second flattened end that is configured to preventimproper insertion of said removable weight into said recesses.
 11. Theadjustable dumbbell according to claim 10, wherein said locking knob isconfigured to be recessed below said second flattened end when saidremovable weight is inserted into said adjustable dumbbell.
 12. Theadjustable dumbbell according to claim 11, wherein said plurality ofrecesses are rounded pockets that are configured to conform around saidfirst rounded end of said removable weight.
 13. The adjustable dumbbellaccording to claim 12, wherein said first rounded end has a recess thatis configured to mate onto a boss in each od said plurality of recesses.14. The adjustable dumbbell according to claim 1, wherein each saidremovable weight has a recess that extends around a circumference ofsaid removable weight.
 15. The adjustable dumbbell according to claim 1,wherein said handle is connected to each carousal with a bearing wherebysaid carousal is configured to rotate independent from said handle. 16.The adjustable dumbbell according to claim 15, further includes alocking mechanism on each carousal that prevents rotation of at leastone of said carousals.
 17. The adjustable dumbbell according to claim 1,wherein said locking mechanism is configured to collectively lock orunlock said removable weights.
 18. The adjustable dumbbell according toclaim 1, wherein carousal is configured to retain a radially imbalancedeccentric amount of said removable weights in a radial arrangementwhereby said radially imbalanced eccentric amount of said removableweights rotates said carousals on said handle.
 19. The adjustabledumbbell according to claim 18, wherein said radially imbalancedeccentric amount of weights is configured to enable eccentric exerciseby imparting centripetal motion to said handle.
 20. The adjustabledumbbell according to claim 1, wherein said weights are 0.5 Kg to 2 Kgeach.